Merge pull request #271 from kazoompa/feature-OPAL-1927

OPAL-1927 - Added UI to view a variable VCS commit infos
Fix typo in translations
OPAL-1978 Batch datasource added.
OPAL-1978 Added a checkbox for the batch limit input.
OPAL-1978 Limit added to import arguments.
OPAL-1976 TableDto valueset count was missing in the query.
Diff added in vcs modal, pretiffy module removed, use bootstrap CodeBlock instead
Default action for CheckboxColumn is to show/hide alert widget. We no longer needs to setHandler to manage visibility of Alert.
OPAL-1928: Delete category, clearing control group error
OPAL-1928: Reorder categories is working and getting categories locales based from table locales.
Merge pull request #272 from emorency/feature/OPAL-1928-categories-edit-ui

OPAL-1928: Categories Editor UI. MoveUp/Down and locales from table locales
OPAL-1928: Support edition of categories of views variable
Remove unused profile
Remove upgrade steps older that Opal 1.14
* Move SubjectAcl and UnitKeyStoreState to OrientDB
* Remove Spring Version bean and use VersionProvider
* Replace @Autowired constructor by private @Autowired field because of circular dependencies on Spring startup
Create OrientDb indexes
* Add Hibernate Validator
* Add save() & delete() to OrientDbService
* Add GWTP boilerplate processor
Replace Event by @GenEvent
Diff widget added and applied to derived variable history
OPAL-1981: Resolved issue by recreating a dto to save